Why all the effort with ordering ahead, live streams of growing, and virtual ownership, instead of just having online orders? If your customers can order online (ahead of harvest day), you save all the hassle and still deliver the same product. Unless of course the main goal is to make it like a game, but I don't expect (recurring) customers for that.
Yes, it makes sense and I will think about it, but we talking about perishable foods, and it's hard to predict, how much, and what kind of vegetable people will buy before starting the growing process.
And another part of this idea - it let people grow any vegetable, I mean sorts, that not really that common and you can't simply find them in store or even grow something using their seeds.